Guard for woodworking-machines.



Patented Mar 4, I902.

A. 0001;. GUARD FOB WOODWOBKING MACMNES (Application filed Man 12, 1901.)

(N9 Modem IEVEEZ'OZ' m News warms camuom-qma, wnsamar 0 c UNITED STATES PATENT OFFICE.

ANDRE'IV COOK, OF GLASGOW, SCOTLAND.

GUARD FOR wooowoRuins-MACHI ES.

SPECIFICATION forming part of Letters Patent No. 694,834, dated March 4, 1902. Application tiled March 12, 1901. Serial No. 50,824. (lie model.)

, T0 aZZ whmwit nay concern" Be it known that 1, ANDREW COOK, residing in Elliot street, Glasgow, in the county of Lanark, Scotland, have invented certain new and useful Improvements in Guards for lVoodworking-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to" which it appertains to make and use the same.

The invention relates to improvements in guards for wood planing, surfacing, dressing,

and other machines for cutting moldings of various kinds and circular saws, and has for its object to obviate the accidents at present so common to the hands of workmen or attendants engaged in working such machines. In' the drawings, Figure 1 is a perspective View of a planing-machine to which the guard embodying my invention is applied and shown in operation. Fig. 2 is a similar view illustrating the guard swung out of engagement. Fig. 3 is a part perspective view of the guard detached from the machine in its normal position when not in operation. Fig. dis a perspective view, taken at a different plane, i1] ustrating the guard provided with a modified form of covering-plate. Fig. 4E is a similar view showing the guard with a double roller.

In carrying out my invention, reference being made to Figs. 1 to 4, I provide a suitable guide bracket A, which is formed with a hinged joint a, in order to swing the guard out of engaging position, as shown in Fig. 2, and which bracket is bolted laterally to the side of the machine B. The bracket A is mounted with a long vertical screw 0, upon which works the nut D, with its cross-head E, which are capable of being raised and low ered by the bent handle F and for which may conveniently be substituted a hand-wheel (not shown) in order to reduce top hamper when necessary. The said cross head E, which is rigid with or forms an integral part of the nut D, is guided and strengthened by two vertical guide-rods G and H, which are fitted into the bracket A at their lower ends and connected at their upper ends by the stay or cross-head I and nuts g and h. To the cross-head E are connected two horizontal rods J and K, which slidably carry the guard L proper. This guard L consists in part of a platell I of channel formation, which is connected to or forms part of the two bushesor tubular pieces n and-0, which are connected together by two cross-bars n and o and allow of the guard being moved adj ustably along the rodsJ and Kimmediately over the rotary cutters which it is intended to guard. The bush n also constitutes a roller for enabling the timber under treatment to be returned to the attendant. The cross-bars n and 0' are mounted with two longitudinal rods j and 71:, Fig. 4. The rod it carries two depending slotted levers Z and m, upon the lower ends of which is mounted the roller N, which forms another part of the guard. The rod j carries a spring 19. The spring 19 is provided at its free end with a roller-bearing which works in the slot with which the lever Z is provided and acts upon the levers l and m and the antifrictionroller N in such manner as to throw them into 1 an angular position toward the attendant.

By virtue of this arrangement the roller Nis "brevity I will call a cover-plate, constitutes a guard or shield and, as shown in Fig. 4, is

provided with a number of parallel slots or holes which enable the attendant to see the rotary cutters. In Figs. 1, 2, and 3 this cover M forms part of a separate attachment, which is fitted to the slotted levers land m immediately above the antifricti-on-roller N.

I claim- 1. In a device of the character described, the combination with a planing-machine, and the horizontally-disposed rotary cutters carried thereby; of a hinged bracket secured to the side of said machine, a frame carrying a screw secured to the hinged portion of said bracket,a framework slidingly mounted upon said frame, adapted to be actuated by said framework, a swinging frame also mounted upon said framework, a roller mounted upon the end of said swinging frame, and a spring acting upon said swinging frame, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ANDREW COOK.

Witnesses:

I. H. PEARSON, JAMES G. GROVES. 

